Auxiliary-locking mechanism



Fab 1Q; 1931. I 5 AILES 1,7$1;9195

AUXILIARY LOCKING MECHANISM File De 1928 4, Sheets-Sheet l I: I 25 2Zi%i::r://Z5

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Fab. w A. Madras AUXILIARY LOCKING MEGEAEISPK Filed Dec. 17, 192 Smaess -Sheaat 2 k ll' Feb. 10, 1931. A. s. AILES AUXILIARY LOCKING MECHANI SM Filed Dec. 17, 1928 4;- Shets sheec I, k l

Feb. 10, 1931. A. s. AlLEs AUXILIARY LOCKING MECHANI [SM Filed Dec. 17, 1928 4 Sheets-Sheet 4 .I LI:

Patented Feb. 10, 1931 UNITED" STATES "PATENT?" QEEIiCE ADRIAN s. AILES, or chrome; ILLINOIS, ASSIGNOR, BY" MESNE'ASSIGNMENTS, r THE LAKE ERIE.CHEMICAL"COMPANTY; 0F CLEVELAND; 01:10. A CORPORATION or 0x10 AUXILIARY-LOCKING JMEorrANIsi/r Application filedJJecember 17,- 1928.- Serial No., 326,536.

The. object ofth-is invention is to provide an auxiliary locking mechamsm .for safes, vaults. and the like, which becomes-effective to, lock the vault or safe upona attempted burglariousentry and. automatically unlocks after a predetermined time intervaL.

Numerousother objects and advantages of the invention, will beapparentas it is better understood from the following descriptlon, which, taken in connection with th-eaccompanying drawings, discloses a preferred embodiment thereof;

In the drawings: 0 Figure l is. a: vertical 'elevational v ew showing the auxiliary locking,- mechanism appl-iedi to avault." door;

Fig.1 2 is a sidelsectional elevation -onan enlarged scale of the auxiliary locklng mechanism; 1 i

Fig. 3 is a front sectionaljelevationof the same;-

Fig. l is a top; plan. view of the. same;

Fig. 5 is :a vertical sectional elevation-of the auxiliary lock controllinggearing;

Fig. 6. is a front sectional elevation of said gearing showing theparts in their, normal position with the auxiliary locking ,mechanism in operative relationship in respect vof the bolt-work of the vault;

Fig. 7 is aview similarto Fig. 6-, but showing the parts applying the auxiliary looking mechanism to the'boltnvorlr, following an attempted burglarious entry of thevault; Figs. Sand, 9 areviewsf-similar toxFig. 6 5 but illustrating the-operation ofthe controlling, gearing to effect the release, ofthe auxilia-ry locking mechanismin respect of: the bolt-work Fig. 10 is a fragmentary front elevational 0 view showingthe first-stage.of-operation-of the timing device;

Fig. 11 isra: sectional'elevation showingthe second stageofoperation-iof the timing device; i

Fig. 12 is, a. detailed horizontal. section taken on the line.1212 of Figs;

Fig. 13 is a vertical section of the corrosive fluid. vessel constituting anielement of'the timing mechanism; a

14.15. a detailed. vertical section" of .or: blowing in the combination box.

the controlling rodv andfr-eleasing pellet; con

ing mechanism which includes a usual combinationlock contained within theboxor casing 22 mo'unted on the inner. face. of the door, and controlling the operation of the bolt-work 23 which is advanced into suitable keepers in the door frame to lock the vault; and retracted to release the vault door for opening movement.

The operation of the auxiliary locking mechanism is controlled primarily by the wire which is maintained. normally under tension and holds the auxiliary locking mechanism in inoperative position. On release of'said tension by cutting or burning of the wire 24 or its release or disarrangement, the auxiliary lockingmechanism is released. 7

As-shown in Figure 1, the wire 24 is strung and functions up and. down over theinner face of the door 21 and is'supported at the top and'bottom by the pulleys 25. One end 26 of the wire 24 is connected with the auxiliary locking mechanism in a manner which will appear hereinafter, and the otherend 27 of said wiring is connected .to a. spring 28 which in turn is secured at 29 to the door 21. The spring .28 maintains the wire 24 under tension. In theregion of the combination box 22, provision is made for insuring rapid and positive severing of the wire in response to an attempted entry into the vault by punching The structure for effecting this result is shown in detailin Figs. 15' and 16. Secured to the innenface of the door 21 and above and below thecomb natinn b03 are- -angle brackets supporting brackets 30 and 31, of which the horizontal legs 32 and 33 respectively provide support for the upper and lower ends of the hollow wire enclosing and guiding members, preferably in the form of pipes 34 and 35.

These pipes 34 and 35 have their upper and lower ends respectively mounted in holes in the horizontal legs 32 and 33 of the and are retained in position therein by set screws 36 screwed. into sockets in the legs 32 and of said brackets so as to engage the walls of the pipes 34 and 35. The pipes 34 and 35 are bent so as to extend respectively at downward and upward inclinations from the brackets 30 and 31 to the rear of the combination box 22 where their other ends are joined by a hollow connecting member 37. The wire 24 is passed through the pipes 34 and 35 and the connecting member 37, and the latter functions as a support for a wire cutting device.

Mounted horizontally in a socket in the connecting member 37 is a sleeve 33 which extends across a vertical channel 39 of said member 37 through which the wire 24 passes. The sleeve 38 is provided with a vertical h ole 40 for the passage of the wire. and the wall of said sleeve at the top of the hole 40 is formed, as shown more particularly in Fig. 16. to provide a knife edge 41 for cutting the wire 24;

lVithin the sleeve 33 is mounted a movable shearing pin 42 provided with a vertical hole 43 for the passage of the wire 24 companion to the hole 40 of the sleeve. The upper part of the hole 43 is cylindrical in shape and closely embraces the wire 24, but at the bottom the material of the pin is cut away to provide a downwardly flared portion 44 of the hole permitting the instantaneous release of the wire subsequent to the shearing operation. A screw-threaded operating pin 45 is adjus ably screwed into a shouldered tube or sleeve 46 which in turn is screwed into a hole in the rear wall of the combination box 22, and the outer end of the operating pin 45 is in registry with the shearing pin llpon inward movement of the combination box from punching blowing or other dislocator cause, the operating pin 45 engages the shear rig pin 42 and moves it in the surrounding sleeve 38. This movement brings the wire 24 into contact with the knife edge 41 provided by the sleeve and eilects rapid and positive cutting and disabling of the wire. After the wire is cut, the lower end which. extends to the auxiliary locking mechanism is instantaneously released.

The release of the tension on the wire 24 starts into operation the auxiliary locking mechanism, whether the wire be disabled by shearing as hereinbefore described or burned or otherwise disabled so as to release its tension. The auxiliary locking mechanism is shown more particularly in Figs. 2 to 14 in elusive and its parts are mounted within or supported by a suitable housing 47 secured to the inside of the vault door 21. Preferably the housing comprises an angle plate member 48 which is secured directly to the door and the housing proper 49 adjustably mounted on rods 50 carried by supporting blocks 51 projecting from the platemcmhcr 48. This construction permits proper adjustment of the auxiliary locking bolt with reference to the main bolt-work 23 of the vault door. Que of the door-locking bolts 23 is provided with an auxiliary locking socket 52 extending transversely into said bolt and so positioned as to be in registry with an auxiliary locking bolt 53 when the main bolt-work 23 is in locked position in respect of the vault door.

The bolt 53 is mounted for axial sliding movement in a bearing socket 54 provided in the housing 49 and is in position to enter the companion auxiliary locking socket 52 in the bolt 23 to provide an auxiliary lock for preventing the opening movement of the main bolt-work. This locking operation of the bolt 53 occurs whenever tension on the wire 24 is released and prevents any door-opening oper ation of the main bolt-work, irrepsective of impairment or destruction of the combination lock 22.

T he end 26 of the wire 24 extends to and is secured within the peripheral groove 55 of a sheave 56 mounted on the outer end of a spindle 57. which extends across an upper gear chamber 58 provided within the housing 49. The spindle 57 has its hearings in the side walls of the housing 49 and rotates on an axis transverse to the axis of the auxiliary locking bolt 53. A part of the circumference of the bolt 53 is provided with annular rack teeth 59, which are adapted to mesh with companion teeth 60 of a mutilated pinion 61 fixed on the spindle 57.

.ihe pinion 61 is rotated by a pair of coil springs 62 respectively encircling the spindle 57 on opposite sides of the pinion. One end of each spring 62 is anchored to a pin 63 set in a pin socket 64 provided in the housing 49. The other ends of the respective springs 62 abut pins 65 laterally projecting from the opposite sides of the pinion 61. The springs 62 are wound so as to be under tension when the auxiliary locking bolt 53 is in retracted position and operate, on release, to drive the pinion 61 in counter-clockwise direction (Figs. 6 to 9 inclusive). The movement im parted to the pinion 61 by the release springs 62 through the engagement of the pinion teeth 60 with the rack teeth 59 on the bolt 53 functions to advance the bolt 53 into locking position within the socket 52 of the main boltwork 23.

The operation of advancing the auxiliary bolt 53 into locking engagement with the boltwork concurrently sets into action a timing i re geee vided-with an open top'chamber 66, the otj tom 01 which communicates with a chemical reaction chamber '67. A foramin ous-b'ottom plate 68*is supportedby a'depen'din-g flange 69 on the bottom of the chamber 66 and provides a support for a frangible vessel or cartridge 70adapted to containa chemically reactive liquid. The. vessel orcartridge 70 may be constructed of any easily broken substances, such as glass, and after 'havingb'een filled with the liquid is -sealed to prevent its accidental escape and positioned within the chamber: 66 in' the manner shown, for-"example, in Fig. 8.

Supported *inaligned' bearing holes in rods 71 proj ecting "horizontally from the housing 49 is a' plunger 72 provided at itslower end with a head 73. Between the two supporting rodsv 71 the plunger is provided with a collar 7 4 which constitutes'thebottom abutmentfor an encirclingcoil spring 7 5:- Thetop of the coil spring 75 engages the under face of" the top rod 7l and said springis maintained normally compressed whereby on release it will impart a vertical downward stroke to the plunger 72'so asrto cause the head 7 3 to strike the vessel or cartridge 70- a sharp blow to break-the latter and permit the escape of'the fluid through the'formaninous bottom 68 into 7 the. reaction chamber'67.

A detent 76 is pivoted at itsilower end,"as shown at 7-7 on the housing 49. This dete-nt is provided withashoulder 78" adapted to en'- gage the bottom of the collar 74 on'the plunger 72 'to hold the latter normally in elevated position against the force of the spring-=75. Mounted on the inner face of the detent 7 is a dolly roll 7 9. A spring 80,coiled arou-ndthe pivot of the'detent 76 and having its free end engaging the dolly 'roll 79, forces the detent 76 so that the shoulder-78*is held normally in engagement with the collar"74 to keep the pl-uhgerelevated, as shown iii-Fig. 3

Secured to the outer face of the sheave-56 is a pin 81 which engages the=dolly roll79 on release of" the sheave 56 whenever the wire 24is disabled; The 'sprin gs'=62, onsuchrelease, turn the sheave 56' counter-check wise direction and cause the'pin'81 to engage the-dolly roll 79 and turn the detentf76 's0 as to disengage the shoulder 78" from the abutmerit 74. This action releasesthe plunger 72 and permits the spring 75 to impart ash-arp downwardstroke to the plunger and cause the'headi7'3"to fracture the vessel 7 in the chamber 66, as shown in Fig." 111' The break ing ofthe vessel or"cartridge'-70 permits the liquid contained inthe cartridgerto escape and pass inte one reaction chamber-* 67.

Mounted in a bore'82, extending up from the top of the reaction chamber 67,1 is a" rod 83. Thisrod 83 projects upwardlyso astointcrcept a pin. 84projectingfrom the sheave 56. The movementofthe sheave to cause the pin 81 to engage the dolly roll 7 9- and release the detentGG moves the'pin 84 into engagement with the top ot'therod '83. This engagement of the pin 84 with the rod 83 operates to suspend further movement of'the sheave 56 and occurs concurrentlywith the end of the lock ing'inovenient of the auxiliary locking bolt 53, effected bythe mutilatedpinion 61, as shown in Fig. 7. w

The lower end ofthe rod83 is ofreduced diameter in respect of themain body portion of the rod and projects within the reaction chamber 67 reduced portion of the rod is formed with a point 85' adapted to enter a socket 86in a pellet 87. The pellet 87 is held between the pointed end'8'5 of the rod 83' and the upper end of a set screw '88 screwed into the chamb'er67 from the bottom of the housing 49'.

The pellet'87 is made of'a substance which will. be slowly soluble in or'distinguishable by the liquid that flows into the reaction chamber 67. For example, the pellet 87 may be made of aluminum and the reactive liquid released'by the breaking of the cartridge 0 may be a solution'of caustic soda. This solution will slowly attack and dissolve the aluminum pellet .87 but will have no substantial corrosive elfect on the rod 83 and the set screw 88. a

The rod83 will remain elevated 'sufficiently to preserve the locking relationship. of the parts, by'reason of the engagement of the rod with the pin 84, until the pellet 87 is substantially completely dissolved. The action of the caustic soda solution on the aluminum pellet'is' slow and may be timed in various ways. For example, the timing may be effected by varying the strength of the solution or the size of the pellet. In order to avoid giving the burglar anopportunity to enter the vaultfollowing an unsuccessful attempt, it is desirablethat the timing be so regulated as to hold the parts in position for maintaining the auxiliary locking bolt. 53 in locking position for a considerable period of time following, an attempt by a burglar on the vault. It will be found practicable to time the solution process so that the vault remains locked overnight or over a week. The gas liberated in the reaction chamber 67 during the solution proces may pass out of the chamber through a duct 89' to'the atmosphere.

The release of the rod 83 following the action of the solution on the pellet 87 in the chamber 67 permits the rod to move down into contact with the set screw 88, thereby permitting further movement of the pin 84and the sheave 56. This sets into bperation the mechanism for withdrawing the auxiliary t its extreme lower end this locking bolt 53 from locking engagement with the main bolt-work 23.

Referri to Figs. 5 to 9 inclusive, the pinion (31 is provided with a peripheral cutaway portion or recess 90 which, when in registry with the annular racl: teeth 59 on the bolt 53. acts to disengage the pinion 61 from the bol" 53. The operation of the pinion G1 in movnig the bolt 53 into the socket 52 of the main bolt-w rlr so positions the pinion 61 with reference to the bolt 53 taat only the last tooth of said pinion 61 is in engagement with the rack teeth 59. inasmuch the peripheral cutaway portion 90 of the pinion 61 immediately follows the last tooth, a very slight further movement of the pinion 61 in a counter-clockwise direction is sufiici it to disengage the pinion from the rack tool. 1 59 of bolt 53. This is acomplished when. the rod 83 drops in the manner hereinbefore described.

The above described disengagement of the pinion 61 from the aurz' permits the operation of gearing for restoring the bolt to retracted or unlocked position in respect of the main bolt-work 23. Mounted on a spindle 91 extending substantially parallel with the spindle 57 are located within a. chamber 92 below the bolt 53 is a pinion 93, the teeth of which engage the rack teeth 59 of the bolt 53. A single spring 9% encircles the spindle 91 and has one end engaging a pin 95 projecting laterally from the pinion 93 and the other end secured to a stud 96 located in a retaining recess 97 provic ed at the bottom of the chamber 92. The power of the spring is such as to impart a counterclockwise rotation to the pinion 93, as viewed in Figs. 5 to 9 inclusive, when the pinion 61 is released from engagement with the rack teeth of the loclrin bolt 53.

During the forward locking movement of the bolt 53, as shown in Fig. 7, the spring 94; is wound because of the rotary movement imparted to the pinion 93, the spring being less powerful than the springs 62 controlling or e operation of the pinion 61.

As soon as the pinion 93 is disengaged from the bolt 53 in the manner hereinbefore described. the power stored in the spring 94.- will rotate the pinion 93 in the opposite direction and-thereby impart a return movement to the bolt 53 so as to release it from engagement in the locking socket 52 of the main bolt-work 23, as shown in Fi 9. A red 98 projecting laterally from the spindle 91 and adapted to either the top or botom walls of a socket 99 in the housing 49 limits the movement of the pinion 93. This rod is preferably so arranged that anyone locked in the vault may manipulate it to release the locking device after a locking operation and before the reaction time shall have expired.

As shown in Figs. 3 and 10, the sheave 56 is provided with a circumferentially-located liary locking bolt 53 recess 100, which is in registry with a companion screw or pin hole 101 in the housing, when the sheave 56 is in the normal position. By inserting a screw or pin in the hole 101, when the ")arts are in such position, the sheave may be locked against movement. This, of coarse, will'also lock the auxiliary locking mechanism and the releasing mechanism.

,VVith the hereinabove described construction, the auxiliary locking mechanism is released following a predetermined interval of time after the operation of the auxiliary locking mechanism. lhis eliminates any necessity for expensive drilling or other operations for restoring the parts to such relationship that an authorized person may open the door of the vault, and yet insures an operation of the auxiliary locking mechanism adequate to protect the vault from the burglarious attempt.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and ar rangement of the parts without departing fromthe spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. In an auxiliary locking mechanism of the class described, the combination of a locking member, actuating and releasing mechanism therefor, controlling mechanism for releasing said locking member, including a chemically reactive part which when in solution will release said locking member, and means controlledby the operation of said locking member for discharging a chemical solvent into contact with said chemically reactive part.

2. In an auxiliary locking mechanism of the class described, the combination of a looking member, actuating and releasing mechanism therefor, controlling mechanism for preventing the release of said locking member, and chemically reactive means controlled by the operation of said locking memher for effecting the release of said controlling mechanism.

3. In an auxiliary locking mechanism of the class described, the combination of a locking member, actuating and releasing mechanism therefor, controlling mechanism for preventing release of said locking member, including a soluble positioning element, a frangible container for a chemically reactive fluid, means for fracturing said container to discharge said fluid concurrently with the operation of said locking member, and a fluid-containing chamber for holding said discharged fluid in contact with said soluble positioning element, whereby to release said controlling mechanism to permit operation of said actuating and releasing mechanism and to restore said locking memtive position.

5. In an auxiliary locking mechanism of the class described, the combination of a looking member, actuating gearing therefor disengageable from said locking member, a controlling element for preventing such disengagement, timing mechanism rendered oper ative' concurrently with the movement of said locking member to operative position and adapted at the end of a predetermined time interval to eifect release of said controlling element,.and other gearing effective upon disengagement of said first-mentioned gearing to restore said locking member to inoperatve position.

6. In an auxiliary locking mechanism of the class described, the combination of a locking member, spring-operated actuating.

gearing therefor disengageable from said locking member, a controlling element for preventing such disengagement, a controlling element positioning device, timing mechanism rendered operative concurrently with the movement of said locking member to operative position and adapted to disable said positioning device and permit release of said controlling element, and other spring-operated gearing efiective on disengagementof said first-mentioned gearing to restore said locking member to inoperative position. 7

7 In an auxiliary locking mechanism of the class described, the combination of a locking member, actuating gearing therefor disengageable from said locking member, a controlling element for preventing such disengagement, a controlling element positioning device, timing mechanism rendered operative concurrently with the movement of said locking member to operative position and adapted to disable said positioning device and permit release of said controlling element, and other gearing efiective on disengagement of said first-mentioned gearing to restore said locking member to inoperative position. a

8. In an auxiliary locking mechanism of the class described, the combination of a lock-:

ing member, spring actuated gearing for actuating said locking member, said gearing acting to disengage itself from the locking member at the end of an operative cycle of the gearing, a controlling element for preventing said gearing from completing its operative cycle, a controlling element positioning device, timing mechanism rendered operative concurrently with the movement of said looking member to operative position and adapted to disable said positioning device and permit release of said controlling element, and other gearing efiective at the end of the op erative cycle of said first-mentioned gearing to restore said locking member to-inoperative position.

9. In an auxiliary locking mechanism of the class described, the combination of a locking member, a releasing device, gearing controlled by said releasing device for actuating 'said locking member, a frangible container for chemicallyreactive fluid, a plunger released concurrently with the operation of said locking member for fracturing said container to discharge said fluid, a controlling rod for retaining said locking member in operative position, said gearing being disengageable from said locking member upon release of, said controlling rod, a rod-positioning element soluble in said chemically reactive fluid and located in the region of discharge thereof, said element being adapted lease ofsaid rod for restoring said locking member to inoperative position.

10. In an auxiliary locking mechanism of the class described, the combination of a looking member, a releasing device, spring-operated gearing controlled by said releasing device for actuating said locking member, a.

frangible container for a chemically reactive fluid, a spring-operated plunger released con currently with the operation of said locking member for fracturing said container to discharge said fiuid, a controlling rod for retaining said locking member in operative position, said gearing being disengageable from said locking member on release of said controlling rod, a rod-positioning element soluspring-operated gearing responsive to release of said rod for restoring said locklng member to inoperative position.

ADRIAN S. AILES.

to release said rod uponreaction thereof in. said fluid, and other gearing responsive to re- 

